A view of Askja, a huge caldera in a mountain area called Dyngjufjoll. Notice the different levels of the small crater (right) and the lake which is collapsed ground filled with ground water. The lake has been formed after a big eruption of the crater in front in 1875. The name of the lake is Oeskjuvatn, the crater itself is called viti (hell). A spring can be found on the left side. - Uli Wagemann
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